Installing the USB-SSR08
Unpacking
As with any electronic device, you should take care while handling to avoid damage from static
electricity. Before removing the device from its packaging, ground yourself using a wrist strap or by simply
touching the computer chassis or other grounded object to eliminate any stored static charge.
Contact us immediately if any components are missing or damaged.
Installing the software
Refer to the MCC DAQ Quick Start and the USB-SSR08 product page on our website for information about the
software supported by the USB-SSR08.
Install the software before you install your device
The driver needed to run the USB-SSR08 is installed with the software. Therefore, you need to install the
software package you plan to use before you install the hardware.
Installing the hardware
Before you connect the USB-SSR08 to your computer, connect the external power supply that was shipped with
the device.
You can connect up to four compatible MCC USB Series devices in a daisy chain configuration to a single USB
2.0 port on your computer. If your system has a USB 1.1 port, you can connect up to two MCC USB Series
devices.
Configuring the hardware switches
The USB-SSR08 has three onboard switches that configure the I/O module type, relay logic polarity, and relay
power-up state. Configure these switches before you connect the external power supply to the USB-SSR08.
Factory-configured default settings are listed in the table below. Refer to Figure 6 on page 11 for the location of
each switch.
PCB label
IN OUT (S1)
NON INVERT INVERT
(S2)
P/UP P/DN (S3)
Each DIP switch configures one module group. The switch labeled
switch labeled
configures modules 5 through 8.
CH
You can use InstaCal to read the current configuration of each switch.
Default switch configuration
Description
Configures the I/O type per module group for input or output.
Configures the relay logic parity per module group for invert or
non-invert logic.
Configures the power-up state of output relays for pull-up or
pull-down.
Figure 2. Typical PCB switch
configures modules 1 through 4, and the
CL
8
Chapter 2
Default setting
OUT (output)
NON INVERT
(active low)
P/UP (Pull-up)
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